5 Jan
2022
5 Jan
'22
11:13 p.m.
We have three Intel-based laptops of various vintages, from a year old to 15 years old.
Their built-in Intel audio hardware's native rate is 48Khz.
I've played 44.1Khz CD audio on all three, via Pulse or JACK, without any distortion.
On January 5, 2022 9:55:36 AM HST, Paul Davis <paul(a)linuxaudiosystems.com> wrote:
ALSA will never allow the "wrong" format to
be delivered to the device.
If you select a format the device does not support, ALSA will not
allow the device configuration step to succeed.
If the device lies about what formats it supports, well, that's a
different issue.
On Wed, Jan 5, 2022 at 12:39 PM <nik(a)parkellipsen.de> wrote:
>
> Well, that was just an example ... but I've played around with intentionally
using
> the "wrong" sample format to make noise music, and it sounds very
similar.
>
>
> Paul Davis wrote on 05.01.2022 20:08 (GMT +01:00):
> > there are almost no audio interfaces that accept F32, let alone require
> > it.
> >
> > On Wed, Jan 5, 2022 at 11:27 AM <nik(a)parkellipsen.de> wrote:
> > >
> > > Yes, that was a typo. It was meant to be 44100.
> > >
> > > The codec supports that rate.
> > >
> > > But I think it's more about the sample format than the sample rate.
> > > It really sounds like the card expects F32 but is sent S16_LE, and vice
> > versa.
> > >
> > > Best,
> > > n
> > >
> > >
> > > Michael Jarosch wrote on 05.01.2022 11:00 (GMT +01:00):
> > > > Am 05.01.22 um 10:34 schrieb nik(a)parkellipsen.de:
> > > > > My typical start options are - jackd -P98 -dalsa -dhw:0 -r44000
> > -p512
> > > > -n5
> > > >
> > > > That's a typo, right? ;)
> > > > (44000 instead of 44100)
> > > >
> > > > My experience is that modern audio devices work better with a
> > samplerate
> > > > of 48000 Hz. Some of them don't even sync to 44100. My ten year
old
> > T410
> > > > does, fortunately:
> > > >
> > > > $ cat /proc/asound/card0/codec#0 |grep rates
> > > > rates [0x160]: 44100 48000 96000
> > > > rates [0x560]: 44100 48000 96000 192000
> > > > rates [0x560]: 44100 48000 96000 192000
> > > > rates [0x160]: 44100 48000 96000
> > > > rates [0x160]: 44100 48000 96000
> > > > rates [0x160]: 44100 48000 96000
> > > > rates [0x160]: 44100 48000 96000
> > > > rates [0x160]: 44100 48000 96000
> > > >
> > > > Also, n seems high to me. I usually start with lower numbers and
> > rather
> > > > play with the periods.
> > > >
> > > > greets!
> > > > Mitsch
---
David W. Jones
gnome(a)hawaii.rr.com
exploring the landscape of god
http://dancingtreefrog.com
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